Truth seems to sit somewhere in-between, DwarfStar 4 seems to mainly exists only because of llama.cpp, and authors basically were very inspired by llama.cpp's code, and even in some places literally have copied pieces from it, all with proper attribution and everything, I'm not trying to say this is bad, seems OK to me:

> ds4.c does not link against GGML, but it exists thanks to the path opened by the llama.cpp project and the kernels, quantization formats, GGUF ecosystem, and hard-won engineering knowledge developed there. We are thankful and indebted to llama.cpp and its contributors. Their implementation, kernels, tests, and design choices were an essential reference while building this DeepSeek V4 Flash-specific inference path. Some source-level pieces are retained or adapted here under the MIT license: GGUF quant layouts and tables, CPU quant/dot logic, and certain kernels. For this reason, and because we are genuinely grateful, we keep the GGML authors copyright notice in our LICENSE file. - https://github.com/antirez/ds4#acknowledgements-to-llamacpp-...

Been a lot of fun to play around with it since https://news.ycombinator.com/item?id=48142885 (~2 days ago), managed to make the generation go from 47.85 t/s to 57.07 t/s so far :)